Hose-coupling for air-brakes.



Patented Oct. 24, I899.

H SHEPHERD &. D DELARIA HOSE COUPLING FOR AIR BRAKES.

(Apph s flldAp s 1899) (lo Model.) 2 Sheets-Sheet l,

INVENTEIHS No. 635,402. Patented Oct. 24,1899. H. SHEPHERD & u. DELABIA.HOSE COUPLING FOB AIR BRAKES.

(Application m Apr. 6, 1889.) I (No Model.) 1. 2 Sheets-Sheet 2,

WITNESSES I lilV-ENTUHF aw?" a. 0% 2} if .m: uonms PETERS co mo'ro-umm.wAsnmn'rou o UNITED STATES PATENT iTEIcE.

HARRY SHEPHERD AND DENNIE DELARIA, OF MINNEAPOLIS, MINNESOTA.

HOSE-COUPLING FOR AIR-BRAKES.

SPECIFICATION forming part of Letters Patent No. 635,402, dated October24, 1899.

Application filed April 6,1899. Serial No. 711 965. (No model.)

To all whom it may concern:

Be it known that we, HARRY SHEPHERD and DENNIE DELARIA, citizens of theUnited States, residing at Minneapolis, in the county of Hennepin andState of Minnesota, have in-, vented a new and useful Improvement inHose-Couplings for Air-Brakes, of which the following is a full,clear,and exact description reference being bad to the accompanying drawings,which form a part of this specification.

The purpose of our invention is to provide means for automaticallyclosing the'air-passages in hose-couplings when the same aredisconnected, thereby preventing sand or dust from lodging therein.

The principle of construction as applied to the air-brakes now in use isso well understood that we do not deem it necessary to describe itherein further than to say that when the pipes which carry thecompressed air from one car to another throughout the length of thetrain are broken (uncoupled) their open ends rest near the ground andthat sand and dust accumulate therein, often to the extent of cloggingthe screens with which the compression-cylinders are provided, therebypreventing the operation of the triple valves located therein, and asthe brakes are set through the operation of the said triple valvescollisions too frequently occur, and it is the purpose of our inventionto so effectually exclude the sand and dust from the said pipes andcylinders as to render accidents from such cause exceedingly infrequent,if not impossible. At the same time we provide for the free passage ofthe compressed air in the pipes and cylinders when the couplers areconnected and for the release of the same therefrom when the couplersare disconnected or when the pipes are broken. our invention consists inproviding hose-couplings with valves of ipeouliar construction, whichvalves are herein clearly shown and hereinafter fully described.

In the accompanying drawings, Figure 1 is a top view of our coupler asit appears when in use; Fig. 2, a side elevation of the same; Fig. 3, aside elevation thereof as it appears when in position to bedisconnected; Fig. 4, a side elevation of one-half of the couplerdetached from-its fellow, showing the opening To this end therein; Fig.5, a bottom view of the same; Fig. 6, a section of Fig. 1, taken on theline 6 6, showing side elevation of the valves; Figs. '7 and 8,sectional views of the valve in different positions, and Fig. 9 adetail.

, Similar letters refer to similar parts throu ghout the several views.7

A is the coupler, and B the valve. The coupler, as before stated, is notunlike those commonly used. It consists of two parts, each part beinghollow and each being provided with a side and an end opening, thusproviding for a free passage of the compressed air into and through oneand out from the other. The head portion of each half-coupler isprovided with an interlocking clutch a and lug b, which when engagedhold them firmly together. The stop-pin 0 serves to regulate or limitthe movement of one halfcoupler with or upon the other. The side openingat of each half-coupler A is provided with a recessed bushing e, whichrenders the joint efiected by their union airtight. As thus described,the coupler is substantially like those commonly used, and ourimprovement consists in affixing in the head portion of eachhalf-coupler the valve herein shown and described. As a practical Way ofaccomplishing this we pierce the concavo-convex side of thehalf-couplers and affix therein the pin f. This pin serves asthevalve-guide, over which we slide the coiled spring 9. Over the stem fand onto the spring g we now force the valve B, an end view of which isshown in detail Fig. 9. This valve B consists of alongitudinally-pierced shaft portion h, with a spider-head flange t' atone end and a flanged head j at the other. Onto this shaft portion h ismounted a longitudinally-shifting portion 7a, (the valve proper,)consisting of a centrallypierced and circumferentially-grooved flangehaving the circumferentially-recessed packing e therein. Between thismovable flange 7c and the head is a coiled spring m, the purpose ofwhich is to hold the movable flange 7c (the valve) up to or against itsseat 1' (the spiderhead flange.) Now it will be seen that when the longas they remain connected,thus providing a free passage for thecompressed air from one half of the coupler to the other, andconsequently throughout the length of the train, and that when the twohalves of the coupler A are disconnected the valves B will be forcedoutward by the reflex action of the springs g until they are seated,(the position shown in Fig. 7,) when the compressed air in the pipespassing through the spider-head flange i will depress the springs m andforce the movable flange 7c outward, as shown in Fig. 8, where they willbeheld until the air in the pipes shall have reached its normal density,when through the reflex action of the spring 191 they will be forcedback to their seats, as shown in Fig. 7, where they serve to close theopening (Z of the couplers A, the outer circumferential walls of theirpacking-rings Z contacting with the inner circumferential wall of thebushings eifectually closing the openings (Z and excluding the sand anddust therefrom. Thus the purposes of our invention are accomplished.

Having thus described our invention, what we claim as new, and desire tosecure by Letters Patent, is

1. The combination with hose-couplers of the character described, ofcentrally-pierced valves, mounted and longitudinally'movable upon pinsaffixed in the said couplers, said valves being seated, and heldin placeclosed, by means of springs affixed thereto, and deflccted by contactwith, and held in place open, by connecting the said couplers, allsubstantially as shown and for the purpose specified. I

2. The combination with hose-couplings of the character described, ofpins laterally affixed therein, centrally-pierced valves mounted, andlongitudinally movable upon the said pins, and springs for holding thesaid valves seated when the said hose are disconnected substantially asshown and for the purposes specified.

3. In a hose-couplerof the character herein described, the combinationtherewith of a pin laterally aflixed in its interior wall, acontrally-pierced, longitudinally-movable valve mounted thereon, aspring inclosing said pin and back of said valve, a flange,longitudinally movable upon the shaft portion of the said valve and aspring in front of said flange, all substantially as shown and for thepurposes specified.

HARRY SHEPHERD. I DENNIE DELARIA.

\Vitnesses:

G. E. SMITH, II. M. FARNAM.

